Chemical Name: 4-Hydroxyandrost-4-ene-3, 17-di one
4-Hydroxyandrostene dione
Suited For: All Levels
Cycle Length: 2-4 Weeks
Dosage: 100-200mg/day
Half Life: Varies depending on proprietary blend


Formatane is a steroidal compound known as an AI (Aromatase inhibitor) which permanently binds itself to the aromatize enzyme. Formastane was originally used in cancer patients as an injectable substance however, due to its anabolic properties, was discontinued and replaced by other AI products. Formastane can reduce estrogen levels by as musch as 50% within several days which is ideal when using a prohormone that has high estrogenic risks.

Side Effects:

Due to the impressive ability to block estrogen it will normally reduce HDL levels whilst increasing LDL levels, making it an issue on cholesterol levels. Taking too much Formastane could lead to suppressed estrogen too.


Users can expect to find less bloat and body fat storage when taking Formastane, whilst also been able to successfully block estrogen when using aromatizing steroid compounds.

As found in:

Bulk Performance Solutions – Formasurge

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